BandRatios
- Order of the output bands
- Arguments

BandRatios

BandRatios (Hoku 3.2) takes the ratio of every band of a multiband image with every band that follows it. Ratios with the bands before it would be redundant, so an image with N bands gives N(N−1)/2 output bands.

Order of the output bands

The first N−1 bands pair band 0 with bands 1 to N−1.
The next N−2 bands pair band 1 with bands 2 to N−1.
And so on, until the last band, which pairs band N−2 with band N−1.

For example, a 4-band image gives 6 output bands, for the pairs (0, 1), (0, 2), (0, 3), (1, 2), (1, 3) and (2, 3).

Arguments

Argument	What it does	Default
operation	The ratio or the difference of each pair of bands	ratio
output bits	Floating point, 32-bit or 64-bit	32
bandsOut	Output only the first M bands (bands 0 to M−1). Useful because the number of bands grows quickly	all

The input must have more than one band, and can be byte, integer or floating point. The output is floating point.

Table of Contents

BandRatios

Order of the output bands

Arguments